British lightweight Caroline Dubois retained her WBC world title after her contest with Jessica Camara ended in a frustrating technical draw because of a clash of heads.

On her 24th birthday, Dubois dropped the challenger with a smart, straight left hand in the first round.

The Londoner sensed an early finish and continued to pile on the pressure in the second as blood flowed down from Camara’s left eye after the accidental coming together of heads.

The referee and ringside doctor waved off the contest before the third, ruling the 36-year-old Canadian – whose right eye was also heavily swollen – was not fit to continue.

“The blood wasn’t coming in her face, she didn’t want it,” said Dubois, who won her first 10 pro fights.

“It was either getting stopped by a doctor or I’m stopping it. I wish her well and hope she has a safe flight home.”

Dubois was upgraded from interim to full world champion after Katie Taylor vacated her belt. She has called for a unification fight with Doncaster’s WBO champion Terri Harper next.

Barnsley’s super-middleweight Callum Simpson defends his British and Commonwealth title against Steed Woodhall in the main event later on Saturday.

It was not the outcome Dubois wanted, but an otherwise impressive four minutes of boxing from the champion.

Her entrance to a dance remix of Whitney Houston’s ‘I’m every woman’ hyped up the sold-out 3,000 crowd, made up almost entirely of fans supporting Yorkshireman Simpson.

Dubois came out with real intent. She landed a crisp body shot early in round one, before flooring Camara with the southpaw left.

Former cruiserweight world champion Chris Billam-Smith cheered his stablemate on from ringside as Dubois landed hurtful, menacing power punches.

Camara was on a four-fight winning streak, but the Montreal fighter was clearly out of her depth as she sighed on return to the corner.

Dubois continued to bulldoze her way through in the second, grunting with each punch thrown.

She looked set for a sixth stoppage win before the disappointing finish brought a premature end to proceedings. If the contest had gone past the fourth round, it would have been decided by the judges’ scorecards.

“The cut was on the side and it [blood] wasn’t dropping in the eye. I was surprised we didn’t go past four rounds,” added Dubois’ trainer Shane McGuigan.

It has been quite the few months for the Dubois name. The Greenwich fighter’s estranged brother, Daniel Dubois, stopped Anthony Joshua in September to retain his world heavyweight title.

Long heralded as the future of women’s boxing, amateur standout Dubois – despite this draw with Camara – has done everything asked of her as a professional.

“She is the best female fighter on the planet by a mile,” said McGuigan.

Her boxing profile does not yet marry up with her abilities, however. Dubois’ record is void of that marquee opponent, one which could propel her stardom.

A unification contest with Harper or Brazil’s IBF champion Beatriz Ferreira would be a real step up, but both fights Dubois would be confident of winning.